Chipping or hammering tool.



S. W. GOOCH.

CHIPPING on HAMMBRING TOOL.

APPLICATION FILED NOV. 11, 1911` RENEWEDNOV.16,19X2,

Patented 1360.31, 1912.l

WHNESSES f INVENTon MPL TED ith-@TENT @lhllla 'SHADE W. GOCCE, OF NEW BRIGHTON, PENNSYLVANIA, ASSIGNOB, '1'0 THE GOOCH- KEHLER SPE'CIJTY MANUFLCTUREIIG COMI'ANY, OF RQG'ES'lER, PENNSYL- VANM, L CRPDBATION '01 PENNSYLVANIA.

Specification of Letters .'Eatent.

Patented Dec. 31., 193.2.

Application tiled lt'overnber 3.1, 1911, Seriahlto. 659,712. Renewed November 16, 193,52. Serial No. 731,575.

To all whom it may camcom Be it known that I, SHADE NV. Gooon, a resident of New Brighton, in the county 'oli Beaver and State of Pennsylvania, have invented. a new and useful'lmproveuient in Chipping or Hammerng Tools, of which' the 'following is a specification.

This invention relates to hammering or percussion 'tools `01' implements, such as chipping hammers, riveting hammers, and other tools or implements for a similar purpose.

The object of the invention is to rovide a mechanically driven implement a opted to give e blow, which is capable of being opAv erated at a very-high speed, is substantially free from wear, and which can he conveniently held and operated.

The invention comprises the construction and arrangement of parts hereinafter described and claimed. c

ln the 'accompanying drawing Figaro l is a longitudinal section through the implement; Fig. 2 is a transverse section .thereof on the line Q-2 Fig. l; and Fig. 3

a longitudinal section thrraigh the forward part olE the implement shoiwingbY `the tool shank partly pushed out.

The inuvilement Iillustrated has all of the Operatingr mechanism inclosed within a easintr or shell 1, which ot' rcneral cylindrical form, and which is preferably knurled or roiurhened on the exterior so `that itV can he securely grasped and held. 'lhe casing' preferably tapers somewhat at its forward end7 and is provided in said ond with an opening; ol reduced size through which the tool holding shank or plunger 3 projects. This shank orplunprovided with a suitable tool'holdcr. chuck or the like, indicated at' Ll, and which :may he ot' any suitable or desirable conistruction, and .need not he explained. This holder is adapted to hold any suitalile tool, such as a chisel for chippingr or mortising, a rivet set 'tor riveting, or At'or that mat-ter a drill or other desired tool.

The tool holding' shank or ph'mger 3 at its innerend 'is provided with an enlarge.

nientI o and interposed`hotween the same and an 'internal shoulder (3 is a helical.

spring 7, arranged to hold the tool holding shank or plunger in its inward or retracted position. The`l portion vot'V the implement carrying the `tool holder or plunger may, if

desired, loe an integral part ot the casing l., hat preferably is in a separate part l eonneeted to the casing l by a threaded connection, as shown in Fig. l. The spring 7 .is so arranged that when the plunger is held in its inward or retracted position its inner end projects slightly into the chamber in the casing 1, as shown in Fig'. l. Said shank or plunger is held against rotation and limit-odin its reciprocal movement `by means of a' pin 8 extending therethrough.

and through diametri-:ally oppositely located slots 9 in the casing extension; and has its end secured Vto a sleeve 10 slida'ole on said extension and roughened or knurled on its exterior so that it can be frrnly grasped, and by means of which the too holding plunger can he pushed outwardly so that its inner cud no longer projects into the chamlwr `iin the casing),` or shell 1, as shown in Fig. 3, as is done when itis desired to keep thetool 'rom being' acted upon by the hammer lun'eina'lter described.

The rear end of the casing is closed h v means ot a bushing or plug' 19 which is threaded into the casing and is provided with a central opening throuffh which projects the shank 13 of the rolhting driving' shell or cylintflcr lll. This shank at its outer end is square or otherwise formed to have coupled thereto a driver, shown as a flexible shaft 15. The bushing or plug l2 at its outer end is reduced and externally threaded, as at 1G, and adapted to have secured thereto the casing 17 of the llexihle shaft.

Within the rotating shell or cylinder lil, and having a fairly close fit therein, is a reciiiror'ratinn' hammering member 0r pluie Lder 1S whose outer end 19 forms a hammer adapted to deliver hlows on the inner end 5 of the tool holding' shank or plunger. The member 1S has a spiral cam connection with the rotationr cylinder lt. As shown, the

'plunger is provided with two sleeves rigidlv secured thcretonnd separated by a spiral cam grrom'e 30. which is shown arranged to giro a single.haclm'ard and :forward reciprocatnion to the plunger for each rotation of the cylinder' Lt. This cam groove is engaged by a stud 2l threaded in the cylinder 14 and projecting radially in wardly into the camL groove. Consequently the rotation of .the cylinder 14 imparts posi` both directions e very high tive movememb to the hemme plunger ile beth din'eesims. I The shell e@ eynel M hes e h'fmf; beek* ing egeinss the innemend of the: bushing er plug'l, :m interposed: between the seme is e bei?. beering 22. At ae otheren said nee e thrust bearing y"egzu'me e. eoer 23 xef im the easing by eeevrs 24e thweee through the easing, 1er and the shel or eylde is e haii ieee?- ng 25. The reces fm' the be eeeg ere formed especvey in the eener and in the end of the cylindef.' 14u Summmding the outer en `of 'the ,"kiemmer punger is e, sleeve 26 which bears egees be imer' em?. ei ,the ferward exenson 1fL of the cefsnpj, and als@ has beaming; et ite inne-r en egem: 'the collar 23, this seeve serving es; am. efldteml means te pevem mevemen; e?? he celle? 23., The seeve 26 s he em mem ing bym screw lv *imaged theegh Shen emi previde en' zemevfcey opposite sides with. Slots 2 im@ which ejec, he ends o e pin pesefeg through 551e nam- Amet punge, and which mer plunger againstfo'e'kem es is Leeeeesery in ore te *me ere eem eey neef/ion Wh the @eating e'e'. er ejy'ees i4 effective.

- n the use the mpemen a. wel ei: the le wel cheek,

desixed kind is Seemed and exble shaft @1 smel vlzg "ineens is eonnece 'w the reel? @ed e? impiemen'z. The implement ie he'ude by mesey grasping the casing) m bezre' l with 'the hand, and es the whole oo ie veeg eompeet and. of substantey cyndrce ferm with out external X3i-ejection it een be eedy guided. The'exble shaft imparts total-y movemenJ te the eyinclea er s'el M, and this through the spra cem connection de'- serbe imparte a positive reciprocating movement *lo the hammer phmgen the hint-e1* being meid reei by means of pin 28 me feg in 510i? '27 in seme The han"- mee plmgei: when p'eee'ed fowerdy strikes egeinsi *the nne-"ee ef ehe tee; the same n the fmmeer plunger mov rile prima 7 erecs the teo shim er phmg'gein n fine maenner; positive bewe are impared 'to fue tool, fm since the hammer is postiveyf mm'ef in 1 Spee-31 een be imparted thereto, much higher than when springs are 'used fm1 either remeng he hammer plunge? or projecting i'he seme .fof- Warfl. te sitfke the blew l When he 'wel is i'fec, from 'the Werk it is desirube to stop the noise {.meeeeened by ehe hammer plunger ng the ee ce??? ing shank o? puager, This is: eeeied means ef he sleeve 1 0, which is grasped by the tmme end feenger off the seme hef Mid between vseid ediweee-ee weh held@ the eefemo. by eeevng eeeve 'erwerdy meugh the pie. 8 new mee'fed fno @he too ceryng shank or pmu ger the letter' is pushed outwardly sentii iis meen.' end is no enge in pesen te' be centeeed by the hemme punger, es seen in Fig. 3. Censequenty., While the ioe is nei 'm eemtect 'wh the Work eil noise is pew Vened, the hammer punge mezcey eeigyrosee-img y in the barre.

'The implement described ef simple met @empece eoeetrucien, een be vey eeey heede end spesa-ted end een, be driven, from any Suitebe sem'ce of meeheeiee pewee, :m 'thewfere edep'ned to en pieces Where power is eveiabe.. Hammering ees, euch es chipping hammers and rve hammam, have hefeuee'e been ergey epeeked by compressed ein which dejes tiomne en. account ei? 'Hee lege dstrbuing the and @he ezepellee ef eem# 'pressing the seme.

in e hammering implement, the enexwfee nation of e. cylindrical ceasing, e hee eee@ img one end thereof? e mei-neming pxigge: *projecting here the meer em o the seeing and into the easing cey mmmte. ile'fem, e spring; eme-ge ite move eei phmgee inwe'ry, fixed eeee 'ehe sealing, a misery rivng; mem'be? m .eeng end egeml member and arranged when projected to strike the end of the tool-holding plunger, and inter-engaging spiral operating connections directly connecting the rotating and f reciprocating members and arranged to positively project and retract said reciproeating member.

In testimony whereof, I have hereunto set my hand. 

